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IGCSE Science - Hiroshima: Effects of the Bombing

A guide to information resources on the Hiroshima bombing, 1945, for IGCSE Physics - compiled by your Librarians

Effects of the bombing

This section of the Libguide looks at the effects of the bombing of Hiroshima.

Click on the tabs for this section or select one of the options below to find Extended Information and Higher Level Information for this topic.

Harry S Truman's announcement on Bombing of Hiroshima

Listen to President Harry S. Truman's annoucement of the first atomic bombing of a Japanese city.  This broadcast was aired on December 2, 1941.

The bomb is dropped

This diagram, from the Manhattan Project Heritage Preservation Association, illustrates how the bombing took place.

0812 local time, 6 August 1945:
1. American B-29 bomber 'Enola Gay' approaches Hiroshima at an altitude of about 9,357 metres, and begins its bombing run
2. At 0815 it releases the atomic bomb 'Little Boy'
3. The aircraft then performs a sharp, 155 degree right turn and dives an estimated 518 metres
4. The bomb explodes with a force of 13 kilotons at a height of approximately 576 metres above the city
5. About a minute later the first shock wave, travelling at about 335 metres per second, hits the aircraft

(Information from:


All the watches found in the ground zero were stopped at 8.15am, the time of the explosion.

First hand accounts of the bombing

This BBC video includes first-hand accounts from the air and ground, re-telling memories from the day the world first witnessed the horrors of atomic warfare.

Like a ghost out of hell

Click the link below to listen to a radio broadcast from February 24, 1964 in which a survivor of the bombing talks about his experience.

This description of the clip is taken from the website: "The morning of Aug. 6, 1945, was bright and clear. In the Japanese city of Hiroshima, citizens were going about their business: cleaning up after breakfast, travelling to school, sitting down to a day's work. Earlier that morning, an air-raid siren had screamed a warning. But, accustomed as they were to the sound, residents barely noticed. In this clip from CBC Radio, school principal and survivor Takuo Matsumoto remembers that morning."

Scroll to clip number 5 to listen to this clip.

Hiroshima Peace Memorial Park

This is a picture of the Memorial Cenotaph which contains the names of those who lost their lives as a result of the bombing. Its shape represents the ancient houses of Japan. 88 volumes containing over 247,000 names have been placed in the Cenotaph and in 2006, a blank 89th volume was added for the many unknown victims.

Click on the links below to find out more about the memorials and museums in Hiroshima

Images of Hirsoshima

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Japan 日本 2009 B&W — Hiroshima (広島市) (Hiroshima) — Hiroshima Peace Memorial Park (広島平和記念公) 61

This statue of Sadako Sasaki, a high school child who died of A-bomb disease (Leukemia), is located in the Hiroshima Peace Memorial Park.  Find out more about the statue by clicking on the image above and learn about Sadako's story by reading one of the books in the boxes below.

Book about Sadako

Remembering the tragic aftermath of the Hiroshima bomb - BBC

In this moving clip from the BBC, Hiroshima residents talk through their first memories after the bomb had fallen.

The effects of nuclear weapons

This website looks at the effects of nuclear weapons, including thermal effects, long-term effects, blast effects and radiation effects.

After effects

This website looks at the after effects of an atomic bombing and how it impacts a person's body.